The ice cubes are melting.

https://pixabay.com/th/photos/%E0%B8%81%E0%B8%AD%E0%B8%99%E0%B8%99%E0%B8%B2%E0%B9%81%E0%B8%82%E0%B8%87-%E0%B9%84%E0%B8%AD%E0%B8%A8%E0%B8%84%E0%B8%A3%E0%B8%A1-%E0%B8%99%E0%B8%B2-%E0%B9%81%E0%B8%8A%E0%B9%81%E0%B8%82%E0%B8%87-2531981/